It is a very good location if you are coming from the airport with public transport, you just have to take a train and metro. The little street is a bit hidden but it's easy to recognize the door and we appreciated the quiet, not so touristy rather residential neighbourhood after the overwhelming Bangkok days.
If you are up to some walking, you can reach the center easily and see Bangkok's life on the streets, or even try the boat on the river from not so far away to go the castle and old temples.
The flat is nice, there is everything you need, good wifi and AC.
The bed is very comfortable.
The hosts are very helpful, they even helped us arranging our trip to an island after Bangkok, they called our driver who was supposed to pick us up and explained him the location in Thai which was a really big help! Thanks again! :) We would definitely stay at their place again!